/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:44:57,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:44:57,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:44:57,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:44:57,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:44:57,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:44:57,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:44:57,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:44:57,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:44:57,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:44:57,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:44:57,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:44:57,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:44:57,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:44:57,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:44:57,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:44:57,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:44:57,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:44:57,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:44:57,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:44:57,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:44:57,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:44:57,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:44:57,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:44:57,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:44:57,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:44:57,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:44:57,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:44:57,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:44:57,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:44:57,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:44:57,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:44:57,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:44:57,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:44:57,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:44:57,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:44:57,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:44:57,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:44:57,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:44:57,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:44:57,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:44:57,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:44:57,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:44:57,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:44:57,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:44:57,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:44:57,752 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:44:57,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:44:57,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:44:57,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:44:57,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:44:57,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:44:57,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:44:57,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:44:57,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:44:57,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:44:57,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:44:57,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:44:57,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:44:57,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:44:57,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:44:57,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:44:57,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:44:57,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:44:57,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:44:57,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:44:57,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:44:57,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:44:57,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:44:57,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:44:57,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:44:57,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:44:58,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:44:58,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:44:58,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:44:58,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:44:58,102 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:44:58,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-21 22:44:58,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc7cc6efa/90a5fb6a40d24d0bb35fa2adfbaecaf2/FLAGf2970e56c [2020-08-21 22:44:58,688 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:44:58,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-21 22:44:58,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc7cc6efa/90a5fb6a40d24d0bb35fa2adfbaecaf2/FLAGf2970e56c [2020-08-21 22:44:59,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc7cc6efa/90a5fb6a40d24d0bb35fa2adfbaecaf2 [2020-08-21 22:44:59,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:44:59,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:44:59,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:44:59,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:44:59,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:44:59,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59, skipping insertion in model container [2020-08-21 22:44:59,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:44:59,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:44:59,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:44:59,503 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:44:59,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:44:59,626 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:44:59,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59 WrapperNode [2020-08-21 22:44:59,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:44:59,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:44:59,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:44:59,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:44:59,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... [2020-08-21 22:44:59,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:44:59,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:44:59,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:44:59,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:44:59,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:44:59,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:44:59,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:44:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:44:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:44:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:44:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:44:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:44:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:44:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:44:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:44:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:44:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:44:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:44:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:44:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:44:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:44:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:44:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:44:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:44:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:44:59,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:44:59,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:44:59,794 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:44:59,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:44:59,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:44:59,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:44:59,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:44:59,795 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:44:59,795 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:44:59,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:44:59,795 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:44:59,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:44:59,795 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:44:59,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:44:59,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:44:59,796 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:44:59,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:44:59,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:44:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:44:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:44:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:44:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:44:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:44:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:44:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:44:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:44:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:44:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:44:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:44:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:44:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:44:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:44:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:44:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:44:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:44:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:44:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:44:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:44:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:44:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:44:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:44:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:44:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:44:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:44:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:44:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:44:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:44:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:44:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:44:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:44:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:44:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:44:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:44:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:44:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:44:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:44:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:44:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:44:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:44:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:44:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:44:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:44:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:45:00,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:45:00,879 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:45:00,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:45:00 BoogieIcfgContainer [2020-08-21 22:45:00,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:45:00,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:45:00,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:45:00,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:45:00,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:44:59" (1/3) ... [2020-08-21 22:45:00,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a19015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:45:00, skipping insertion in model container [2020-08-21 22:45:00,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:59" (2/3) ... [2020-08-21 22:45:00,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a19015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:45:00, skipping insertion in model container [2020-08-21 22:45:00,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:45:00" (3/3) ... [2020-08-21 22:45:00,892 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2020-08-21 22:45:00,903 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:45:00,911 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:45:00,925 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:45:00,950 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:45:00,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:45:00,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:45:00,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:45:00,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:45:00,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:45:00,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:45:00,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:45:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-21 22:45:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 22:45:00,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:00,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:00,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:00,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:00,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1904787813, now seen corresponding path program 1 times [2020-08-21 22:45:00,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:00,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41990489] [2020-08-21 22:45:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,666 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:45:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:45:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:01,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41990489] [2020-08-21 22:45:01,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:01,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:45:01,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174890713] [2020-08-21 22:45:01,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:45:01,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:01,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:45:01,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:45:01,827 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-21 22:45:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:02,933 INFO L93 Difference]: Finished difference Result 275 states and 361 transitions. [2020-08-21 22:45:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:45:02,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 22:45:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:02,950 INFO L225 Difference]: With dead ends: 275 [2020-08-21 22:45:02,950 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 22:45:02,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:45:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 22:45:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-21 22:45:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 22:45:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-08-21 22:45:03,050 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 46 [2020-08-21 22:45:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:03,053 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-08-21 22:45:03,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:45:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-08-21 22:45:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 22:45:03,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:03,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:03,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:45:03,058 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:03,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash -8679295, now seen corresponding path program 1 times [2020-08-21 22:45:03,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:03,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790519285] [2020-08-21 22:45:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,397 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:45:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:03,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790519285] [2020-08-21 22:45:03,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:03,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:45:03,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663616476] [2020-08-21 22:45:03,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:45:03,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:45:03,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:45:03,498 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-08-21 22:45:04,018 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:04,764 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2020-08-21 22:45:04,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:45:04,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 22:45:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:04,768 INFO L225 Difference]: With dead ends: 208 [2020-08-21 22:45:04,768 INFO L226 Difference]: Without dead ends: 133 [2020-08-21 22:45:04,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:45:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-21 22:45:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-21 22:45:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-21 22:45:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-08-21 22:45:04,807 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 47 [2020-08-21 22:45:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:04,807 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-08-21 22:45:04,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:45:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-08-21 22:45:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 22:45:04,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:04,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:04,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:45:04,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:04,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:04,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1364944070, now seen corresponding path program 1 times [2020-08-21 22:45:04,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:04,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123005839] [2020-08-21 22:45:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,200 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:45:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:45:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:05,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123005839] [2020-08-21 22:45:05,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:05,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:45:05,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264764710] [2020-08-21 22:45:05,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:45:05,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:05,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:45:05,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:45:05,299 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 8 states. [2020-08-21 22:45:05,624 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:05,916 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:06,200 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:06,431 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:07,487 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2020-08-21 22:45:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 22:45:07,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 22:45:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:07,490 INFO L225 Difference]: With dead ends: 217 [2020-08-21 22:45:07,491 INFO L226 Difference]: Without dead ends: 133 [2020-08-21 22:45:07,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:45:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-21 22:45:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-21 22:45:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-21 22:45:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-08-21 22:45:07,522 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 51 [2020-08-21 22:45:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:07,523 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-08-21 22:45:07,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-08-21 22:45:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:45:07,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:07,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:07,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:45:07,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:07,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:07,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1317252167, now seen corresponding path program 1 times [2020-08-21 22:45:07,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:07,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172350089] [2020-08-21 22:45:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,785 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:07,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:45:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:45:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:45:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:07,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172350089] [2020-08-21 22:45:07,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:07,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:45:07,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386979770] [2020-08-21 22:45:07,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:45:07,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:07,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:45:07,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:45:07,892 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 6 states. [2020-08-21 22:45:08,210 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:09,281 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:09,769 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2020-08-21 22:45:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:45:09,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 22:45:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:09,775 INFO L225 Difference]: With dead ends: 300 [2020-08-21 22:45:09,775 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 22:45:09,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:45:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 22:45:09,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2020-08-21 22:45:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-08-21 22:45:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-08-21 22:45:09,838 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 59 [2020-08-21 22:45:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:09,838 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-08-21 22:45:09,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:45:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-08-21 22:45:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 22:45:09,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:09,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:09,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:45:09,841 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:09,842 INFO L82 PathProgramCache]: Analyzing trace with hash 19293366, now seen corresponding path program 1 times [2020-08-21 22:45:09,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:09,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107241785] [2020-08-21 22:45:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,165 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:10,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:45:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 22:45:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 22:45:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:10,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107241785] [2020-08-21 22:45:10,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:10,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:45:10,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851098622] [2020-08-21 22:45:10,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:45:10,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:10,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:45:10,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:45:10,314 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 8 states. [2020-08-21 22:45:10,702 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:11,599 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:11,905 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:12,398 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:12,621 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:12,890 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:13,631 INFO L93 Difference]: Finished difference Result 520 states and 648 transitions. [2020-08-21 22:45:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:13,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-21 22:45:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:13,636 INFO L225 Difference]: With dead ends: 520 [2020-08-21 22:45:13,637 INFO L226 Difference]: Without dead ends: 369 [2020-08-21 22:45:13,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:45:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-21 22:45:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 305. [2020-08-21 22:45:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 22:45:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 352 transitions. [2020-08-21 22:45:13,707 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 352 transitions. Word has length 73 [2020-08-21 22:45:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:13,707 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 352 transitions. [2020-08-21 22:45:13,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 352 transitions. [2020-08-21 22:45:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 22:45:13,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:13,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:13,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:45:13,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:13,711 INFO L82 PathProgramCache]: Analyzing trace with hash -989642822, now seen corresponding path program 1 times [2020-08-21 22:45:13,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:13,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770869369] [2020-08-21 22:45:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,023 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 22:45:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 22:45:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:14,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770869369] [2020-08-21 22:45:14,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:14,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:14,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275178478] [2020-08-21 22:45:14,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:14,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:14,178 INFO L87 Difference]: Start difference. First operand 305 states and 352 transitions. Second operand 9 states. [2020-08-21 22:45:14,591 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:15,662 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:15,913 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:16,694 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:16,944 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:17,200 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:17,349 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2020-08-21 22:45:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:45:17,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-21 22:45:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:17,357 INFO L225 Difference]: With dead ends: 408 [2020-08-21 22:45:17,358 INFO L226 Difference]: Without dead ends: 405 [2020-08-21 22:45:17,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:45:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-21 22:45:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 305. [2020-08-21 22:45:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 22:45:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 351 transitions. [2020-08-21 22:45:17,426 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 351 transitions. Word has length 77 [2020-08-21 22:45:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:17,426 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 351 transitions. [2020-08-21 22:45:17,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 351 transitions. [2020-08-21 22:45:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:45:17,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:17,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:17,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:45:17,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:17,430 INFO L82 PathProgramCache]: Analyzing trace with hash 636453553, now seen corresponding path program 1 times [2020-08-21 22:45:17,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:17,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250669706] [2020-08-21 22:45:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,682 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:45:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:45:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:17,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250669706] [2020-08-21 22:45:17,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:17,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:17,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639011438] [2020-08-21 22:45:17,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:17,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:17,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:17,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:17,804 INFO L87 Difference]: Start difference. First operand 305 states and 351 transitions. Second operand 9 states. [2020-08-21 22:45:18,647 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:18,902 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:45:19,156 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:19,410 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:20,325 INFO L93 Difference]: Finished difference Result 694 states and 873 transitions. [2020-08-21 22:45:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:45:20,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 22:45:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:20,329 INFO L225 Difference]: With dead ends: 694 [2020-08-21 22:45:20,329 INFO L226 Difference]: Without dead ends: 413 [2020-08-21 22:45:20,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:45:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-21 22:45:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 315. [2020-08-21 22:45:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-21 22:45:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2020-08-21 22:45:20,412 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 93 [2020-08-21 22:45:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:20,412 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2020-08-21 22:45:20,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2020-08-21 22:45:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:45:20,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:20,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:20,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:45:20,415 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash -260939725, now seen corresponding path program 1 times [2020-08-21 22:45:20,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:20,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186280127] [2020-08-21 22:45:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,666 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:20,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:45:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:45:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:20,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186280127] [2020-08-21 22:45:20,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:20,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:45:20,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662920898] [2020-08-21 22:45:20,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:45:20,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:20,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:45:20,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:45:20,809 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand 11 states. [2020-08-21 22:45:21,375 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:21,617 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:21,842 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:22,385 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:22,642 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:22,875 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:23,844 INFO L93 Difference]: Finished difference Result 714 states and 895 transitions. [2020-08-21 22:45:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:23,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 22:45:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:23,848 INFO L225 Difference]: With dead ends: 714 [2020-08-21 22:45:23,848 INFO L226 Difference]: Without dead ends: 423 [2020-08-21 22:45:23,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:45:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-21 22:45:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 323. [2020-08-21 22:45:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-21 22:45:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 369 transitions. [2020-08-21 22:45:23,910 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 369 transitions. Word has length 93 [2020-08-21 22:45:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:23,911 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 369 transitions. [2020-08-21 22:45:23,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:45:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 369 transitions. [2020-08-21 22:45:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:45:23,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:23,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:23,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:45:23,913 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:23,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:23,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1709999732, now seen corresponding path program 1 times [2020-08-21 22:45:23,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:23,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023710747] [2020-08-21 22:45:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,167 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:45:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:45:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:24,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023710747] [2020-08-21 22:45:24,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:24,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:45:24,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64899091] [2020-08-21 22:45:24,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:45:24,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:45:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:45:24,288 INFO L87 Difference]: Start difference. First operand 323 states and 369 transitions. Second operand 7 states. [2020-08-21 22:45:24,751 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:25,336 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:27,210 INFO L93 Difference]: Finished difference Result 997 states and 1285 transitions. [2020-08-21 22:45:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 22:45:27,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 22:45:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:27,217 INFO L225 Difference]: With dead ends: 997 [2020-08-21 22:45:27,219 INFO L226 Difference]: Without dead ends: 698 [2020-08-21 22:45:27,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:45:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-21 22:45:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 599. [2020-08-21 22:45:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-21 22:45:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 711 transitions. [2020-08-21 22:45:27,357 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 711 transitions. Word has length 93 [2020-08-21 22:45:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:27,357 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 711 transitions. [2020-08-21 22:45:27,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:45:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 711 transitions. [2020-08-21 22:45:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 22:45:27,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:27,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:27,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:45:27,371 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:27,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:27,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1136093798, now seen corresponding path program 1 times [2020-08-21 22:45:27,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:27,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129762128] [2020-08-21 22:45:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,722 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:45:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:45:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:45:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:45:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:45:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:45:28,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129762128] [2020-08-21 22:45:28,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:45:28,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 22:45:28,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943528178] [2020-08-21 22:45:28,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 22:45:28,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:28,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 22:45:28,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:45:28,151 INFO L87 Difference]: Start difference. First operand 599 states and 711 transitions. Second operand 17 states. [2020-08-21 22:45:28,991 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:29,464 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:29,768 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:29,995 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:30,577 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:31,475 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:31,797 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:32,061 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:32,319 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:32,659 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:32,938 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:33,513 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 22:45:34,057 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 22:45:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:35,487 INFO L93 Difference]: Finished difference Result 1238 states and 1532 transitions. [2020-08-21 22:45:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 22:45:35,488 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-21 22:45:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:35,493 INFO L225 Difference]: With dead ends: 1238 [2020-08-21 22:45:35,494 INFO L226 Difference]: Without dead ends: 663 [2020-08-21 22:45:35,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 22:45:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-08-21 22:45:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 567. [2020-08-21 22:45:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-21 22:45:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 660 transitions. [2020-08-21 22:45:35,615 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 660 transitions. Word has length 97 [2020-08-21 22:45:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:35,617 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 660 transitions. [2020-08-21 22:45:35,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 22:45:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 660 transitions. [2020-08-21 22:45:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 22:45:35,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:35,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:35,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:45:35,620 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash 773081915, now seen corresponding path program 1 times [2020-08-21 22:45:35,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:35,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558950161] [2020-08-21 22:45:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:45:35,712 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:45:35,712 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:45:35,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:45:35,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:45:35 BoogieIcfgContainer [2020-08-21 22:45:35,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:45:35,768 INFO L168 Benchmark]: Toolchain (without parser) took 36732.71 ms. Allocated memory was 140.5 MB in the beginning and 639.1 MB in the end (delta: 498.6 MB). Free memory was 102.7 MB in the beginning and 480.4 MB in the end (delta: -377.7 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:35,773 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:45:35,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.28 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 171.6 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:35,775 INFO L168 Benchmark]: Boogie Preprocessor took 89.45 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:35,777 INFO L168 Benchmark]: RCFGBuilder took 1166.76 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 167.2 MB in the beginning and 194.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:35,777 INFO L168 Benchmark]: TraceAbstraction took 34878.27 ms. Allocated memory was 234.9 MB in the beginning and 639.1 MB in the end (delta: 404.2 MB). Free memory was 194.4 MB in the beginning and 480.4 MB in the end (delta: -286.1 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:35,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 593.28 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 171.6 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.45 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.76 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 167.2 MB in the beginning and 194.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34878.27 ms. Allocated memory was 234.9 MB in the beginning and 639.1 MB in the end (delta: 404.2 MB). Free memory was 194.4 MB in the beginning and 480.4 MB in the end (delta: -286.1 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 887]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; [L825] int retValue_acc ; [L826] int tmp ; [L830] FCALL select_helpers() [L831] FCALL select_features() [L832] CALL, EXPR valid_product() [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] return (retValue_acc); [L832] RET, EXPR valid_product() [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L836] FCALL setup() [L837] CALL runTest() [L816] CALL test() [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) [L432] CALL waterRise() [L498] COND TRUE waterLevel < 2 [L499] waterLevel = waterLevel + 1 [L432] RET waterRise() [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND FALSE !(\read(pumpRunning)) [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND TRUE ! pumpRunning [L620] CALL, EXPR isHighWaterLevel() [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; [L736] CALL, EXPR isHighWaterSensorDry() [L560] int retValue_acc ; [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] return (retValue_acc); [L736] RET, EXPR isHighWaterSensorDry() [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 [L743] retValue_acc = tmp___0 [L744] return (retValue_acc); [L620] RET, EXPR isHighWaterLevel() [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) [L624] CALL activatePump() [L649] int tmp ; [L653] CALL, EXPR isMethaneAlarm() [L674] int retValue_acc ; [L678] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L678] RET, EXPR isMethaneLevelCritical() [L678] retValue_acc = isMethaneLevelCritical() [L680] return (retValue_acc); [L653] RET, EXPR isMethaneAlarm() [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) [L659] CALL activatePump__wrappee__highWaterSensor() [L643] pumpRunning = 1 [L659] RET activatePump__wrappee__highWaterSensor() [L624] RET activatePump() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE !(\read(tmp)) [L601] RET __utac_acc__Specification1_spec__1() [L463] RET timeShift() [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) [L442] CALL changeMethaneLevel() [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] methaneLevelCritical = 1 [L442] RET changeMethaneLevel() [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND TRUE \read(pumpRunning) [L588] CALL lowerWaterLevel() [L486] COND TRUE waterLevel > 0 [L487] waterLevel = waterLevel - 1 [L588] RET lowerWaterLevel() [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND FALSE !(! pumpRunning) [L633] FCALL processEnvironment__wrappee__base() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) [L902] CALL, EXPR isPumpRunning() [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] return (retValue_acc); [L902] RET, EXPR isPumpRunning() [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) [L906] CALL __automaton_fail() [L887] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 28.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1132 SDtfs, 2290 SDslu, 1323 SDs, 0 SdLazy, 6349 SolverSat, 1428 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 680 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 229226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...